Faber — Chimney not fixed on time due to this other works got affected

Been to Faber and enquired about chimney they suggest some model … but not available at the shop so they said it should come from Bangalore .. they took advance of 5000 and said tomo morning sharp by 11 they will fix the chimney… but when I called they said afternoon, later afternoon when I called they said evening, later evening I called they said 30 mins 15 mins all these reasons … finally they didn’t fix chimney and called so many times they didn’t even responded my call ..due to this all my work spoiled on that … kindly help on the same …